BUG: Define ITK_DYNAMIC_LOADING before ITK_WRAP_PYTHON

This is follow-up to 499afa2

ITK_DYNAMIC_LOADING needs to be define before its value is checked relative to
the wrapping.

Change-Id: Ib8290f7a979bf36cc737e069b72e05bb0a3fcf94

CMakeLists.txt

@@ -137,6 +137,15 @@ if(CMAKE_C_COMPILER_ARG1)
   variable CMAKE_C_COMPILER_LAUNCHER_FLAG should be used instead\
   (CMake>=3.4 required)")
 endif()
+
+#-----------------------------------------------------------------------------
+# ITK build configuration options.
+option(BUILD_SHARED_LIBS "Build ITK with shared libraries." OFF)
+set(ITK_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
+
+option(ITK_DYNAMIC_LOADING "Support run-time loading of shared libraries" ON)
+mark_as_advanced(ITK_DYNAMIC_LOADING)
+
 #-----------------------------------------------------------------------------
 # Wrapping options
 option(ITK_WRAP_PYTHON "Build Python support" OFF)
@@ -159,14 +168,6 @@ else()
   set(ITK_WRAPPING OFF CACHE INTERNAL "Build external languages support" FORCE)
 endif()
 
-#-----------------------------------------------------------------------------
-# ITK build configuration options.
-option(BUILD_SHARED_LIBS "Build ITK with shared libraries." OFF)
-set(ITK_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
-
-option(ITK_DYNAMIC_LOADING "Support run-time loading of shared libraries" ON)
-mark_as_advanced(ITK_DYNAMIC_LOADING)
-
 include(ITKSetStandardCompilerFlags)
 #---------------------------------------------------------------
 # run try compiles and tests for ITK